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Diffstat (limited to 'Doc/c-api/exceptions.rst')
| -rw-r--r-- | Doc/c-api/exceptions.rst | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/Doc/c-api/exceptions.rst b/Doc/c-api/exceptions.rst index 33b4439..b0b1e43 100644 --- a/Doc/c-api/exceptions.rst +++ b/Doc/c-api/exceptions.rst @@ -443,13 +443,18 @@ in various ways. There is a separate error indicator for each thread. .. c:function:: int PySignal_SetWakeupFd(int fd) - This utility function specifies a file descriptor to which a ``'\0'`` byte will - be written whenever a signal is received. It returns the previous such file - descriptor. The value ``-1`` disables the feature; this is the initial state. + This utility function specifies a file descriptor to which the signal number + is written as a single byte whenever a signal is received. *fd* must be + non-blocking. It returns the previous such file descriptor. + + The value ``-1`` disables the feature; this is the initial state. This is equivalent to :func:`signal.set_wakeup_fd` in Python, but without any error checking. *fd* should be a valid file descriptor. The function should only be called from the main thread. + .. versionchanged:: 3.5 + On Windows, the function now also supports socket handles. + .. c:function:: PyObject* PyErr_NewException(char *name, PyObject *base, PyObject *dict) |